Used as an intermediate in the synthesis of nucleoside analogs for antiviral and anticancer drugs. Its modified purine structure enhances stability and selectivity in targeting viral polymerases or cancer cell replication mechanisms. Commonly employed in research for developing novel therapeutic agents, especially in the design of reverse transcriptase inhibitors and kinase inhibitors. Also utilized in molecular biology for labeling and probe development due to its fluorescent properties when incorporated into nucleic acid sequences.